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AJvYcCWtzGq0K1m1r0TZE/xFPYwHtJCxsiDmzwW0PFG9orh2ebueGNy8kml1RKhsE9eT/kheqzdyXSVf7zAqUHU=@vger.kernel.org X-Gm-Message-State: AOJu0YwxYCWQoo7Tpse8rVjTQvNZNmfjnoT6MARPmIZiHdHHLGgaduQp ym3NLejUT+HyrOCImgTSHmRvH1KaHCKWeh+v023hcU+qxWnWxxluTfutN8uwd0XQnb26Iw1wSgu uIL+DdQ== X-Google-Smtp-Source: AGHT+IFLW87NChKUpuru729ez+YTzQQPQ1zJZuAFZHyKX2/vqO6EiFywYU4NMbFp9eXaY3WEpeUQyVtWJ+aZ X-Received: from pjbst3.prod.google.com ([2002:a17:90b:1fc3:b0:301:4260:4d23]) (user=irogers job=prod-delivery.src-stubby-dispatcher) by 2002:a17:90b:288a:b0:2fe:80cb:ac05 with SMTP id 98e67ed59e1d1-30a332f75fcmr6116198a91.9.1746035495170; Wed, 30 Apr 2025 10:51:35 -0700 (PDT) Date: Wed, 30 Apr 2025 10:50:07 -0700 In-Reply-To: <20250430175036.184610-1-irogers@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20250430175036.184610-1-irogers@google.com> X-Mailer: git-send-email 2.49.0.906.g1f30a19c02-goog Message-ID: <20250430175036.184610-20-irogers@google.com> Subject: [PATCH v2 19/47] perf stat: Silence -Wshorten-64-to-32 warnings From: Ian Rogers To: Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Namhyung Kim , Mark Rutland , Alexander Shishkin , Jiri Olsa , Adrian Hunter , Kan Liang , Yury Norov , Rasmus Villemoes , Thomas Gleixner , Darren Hart , Davidlohr Bueso , "=?UTF-8?q?Andr=C3=A9=20Almeida?=" , John Garry , Will Deacon , James Clark , Mike Leach , Leo Yan , Yicong Yang , Jonathan Cameron , Nathan Chancellor , Bill Wendling , Justin Stitt , Josh Poimboeuf , Al Viro , Kyle Meyer , Ben Gainey , Athira Rajeev , Kajol Jain , Aditya Gupta , Eder Zulian , Dapeng Mi , Kuan-Wei Chiu , He Zhe , Dirk Gouders , Brian Geffon , Ravi Bangoria , Howard Chu , Charlie Jenkins , Colin Ian King , Dominique Martinet , Jann Horn , Masahiro Yamada , Arnd Bergmann , Yang Jihong , Dmitry Vyukov , Andi Kleen , Graham Woodward , Ilkka Koskinen , Anshuman Khandual , Zhongqiu Han , Hao Ge , Tengda Wu , Gabriele Monaco , Chun-Tse Shao , Casey Chen , "Dr. David Alan Gilbert" , Li Huafei , "Steinar H. Gunderson" , Levi Yun , Weilin Wang , Thomas Falcon , Thomas Richter , Andrew Kreimer , "=?UTF-8?q?Krzysztof=20=C5=81opatowski?=" , Christophe Leroy , Jean-Philippe Romain , Junhao He , "Masami Hiramatsu (Google)" , Xu Yang , Steve Clevenger , Zixian Cai , Stephen Brennan , Yujie Liu , linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, linux-arm-kernel@lists.infradead.org, llvm@lists.linux.dev Cc: Ian Rogers Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" The clang warning -Wshorten-64-to-32 can be useful to catch inadvertent truncation. In some instances this truncation can lead to changing the sign of a result, for example, truncation to return an int to fit a sort routine. Silence the warning by making the implicit truncation explicit. Signed-off-by: Ian Rogers --- tools/perf/builtin-stat.c | 6 +++--- tools/perf/util/metricgroup.c | 15 +++++++-------- tools/perf/util/stat-display.c | 10 +++++----- 3 files changed, 15 insertions(+), 16 deletions(-) diff --git a/tools/perf/builtin-stat.c b/tools/perf/builtin-stat.c index 300b6393bb41..8c6bf194bba0 100644 --- a/tools/perf/builtin-stat.c +++ b/tools/perf/builtin-stat.c @@ -831,7 +831,7 @@ static int __run_perf_stat(int argc, const char **argv,= int run_idx) =20 l =3D strlen(counter->unit); if (l > stat_config.unit_width) - stat_config.unit_width =3D l; + stat_config.unit_width =3D (unsigned int)l; =20 if (evsel__should_store_id(counter) && evsel__store_ids(counter, evsel_list)) { @@ -2099,7 +2099,7 @@ static int __cmd_record(const struct option stat_opti= ons[], struct opt_aggr_mode session =3D perf_session__new(data, NULL); if (IS_ERR(session)) { pr_err("Perf session creation failed\n"); - return PTR_ERR(session); + return (int)PTR_ERR(session); } =20 init_features(session); @@ -2281,7 +2281,7 @@ static int __cmd_report(int argc, const char **argv) =20 session =3D perf_session__new(&perf_stat.data, &perf_stat.tool); if (IS_ERR(session)) - return PTR_ERR(session); + return (int)PTR_ERR(session); =20 perf_stat.session =3D session; stat_config.output =3D stderr; diff --git a/tools/perf/util/metricgroup.c b/tools/perf/util/metricgroup.c index 46920ebadfd1..1e07dcaed3d7 100644 --- a/tools/perf/util/metricgroup.c +++ b/tools/perf/util/metricgroup.c @@ -256,12 +256,10 @@ static struct metric *metric__new(const struct pmu_me= tric *pm, return NULL; } =20 -static bool contains_metric_id(struct evsel **metric_events, int num_event= s, +static bool contains_metric_id(struct evsel **metric_events, size_t num_ev= ents, const char *metric_id) { - int i; - - for (i =3D 0; i < num_events; i++) { + for (size_t i =3D 0; i < num_events; i++) { if (!strcmp(evsel__metric_id(metric_events[i]), metric_id)) return true; } @@ -355,7 +353,7 @@ static int setup_metric_events(const char *pmu, struct = hashmap *ids, =20 static bool match_metric(const char *metric_or_groups, const char *sought) { - int len; + size_t len; char *m; =20 if (!sought) @@ -570,7 +568,7 @@ static int encode_metric_id(struct strbuf *sb, const ch= ar *x) if (ret) break; =20 - ret =3D strbuf_addch(sb, '0' + (c - code_characters)); + ret =3D strbuf_addch(sb, '0' + (int)(c - code_characters)); if (ret) break; } else { @@ -1145,7 +1143,8 @@ static int metric_list_cmp(void *priv __maybe_unused,= const struct list_head *l, const struct metric *left =3D container_of(l, struct metric, nd); const struct metric *right =3D container_of(r, struct metric, nd); struct expr_id_data *data; - int i, left_count, right_count; + int i; + size_t left_count, right_count; =20 left_count =3D hashmap__size(left->pctx->ids); tool_pmu__for_each_event(i) { @@ -1159,7 +1158,7 @@ static int metric_list_cmp(void *priv __maybe_unused,= const struct list_head *l, right_count--; } =20 - return right_count - left_count; + return (int)right_count - (int)left_count; } =20 /** diff --git a/tools/perf/util/stat-display.c b/tools/perf/util/stat-display.c index e852ac0d9847..0aa172cf5e39 100644 --- a/tools/perf/util/stat-display.c +++ b/tools/perf/util/stat-display.c @@ -622,7 +622,7 @@ static void print_metric_only(struct perf_stat_config *= config, struct outstate *os =3D ctx; FILE *out =3D os->fh; char buf[1024], str[1024]; - unsigned mlen =3D config->metric_only_len; + size_t mlen =3D config->metric_only_len; const char *color =3D metric_threshold_classify__color(thresh); =20 if (!valid_only_metric(unit)) @@ -635,7 +635,7 @@ static void print_metric_only(struct perf_stat_config *= config, mlen +=3D strlen(color) + sizeof(PERF_COLOR_RESET) - 1; =20 color_snprintf(str, sizeof(str), color ?: "", fmt ?: "", val); - fprintf(out, "%*s ", mlen, str); + fprintf(out, "%*s ", (int)mlen, str); os->first =3D false; } =20 @@ -954,7 +954,7 @@ static void evsel__uniquify_counter(struct evsel *count= er) =20 config =3D strchr(name, '/'); if (config) { - int len =3D config - name; + int len =3D (int)(config - name); =20 if (config[1] =3D=3D '/') { /* case: event// */ @@ -967,7 +967,7 @@ static void evsel__uniquify_counter(struct evsel *count= er) config =3D strchr(name, ':'); if (config) { /* case: event:.. */ - int len =3D config - name; + int len =3D (int)(config - name); =20 ret =3D asprintf(&new_name, "%s/%.*s/%s", pmu_name, len, name, config += 1); } else { @@ -1493,7 +1493,7 @@ static int get_precision(double num) if (num > 1) return 0; =20 - return lround(ceil(-log10(num))); + return (int)lround(ceil(-log10(num))); } =20 static void print_table(struct perf_stat_config *config, --=20 2.49.0.906.g1f30a19c02-goog